in the upper Swansea Valley, Wales, UK.


Henrhyd falls are a pleasant three mile walk from Craig-y-Nos Castle, on the stream known as Nant Llech at Coelbren in the Swansea Valley. They tumble  90 feet ( 28 metres ) into a steep sided valley which leads the stream to its confluence with the river Tawe at Abercrave.

A footpath follows the stream down the valley from Henrhyd Falls and after around one mile, where the valley opens out, the ruins of an old woollen mill can be seen. 

The mill used to have a water wheel for driving the wool spinning machinery and here a path leads up the side of the valley to Cefn-yr-Erw Primate Sanctuary.

Henrhyd Falls

The valley of Nant Llech and the area around Henrhyd Falls is renowned for its geological fossil history. The River Tawe has impressive rock formations and deep crystal clear pools, both above and below its confluence with Nant Llech. 

The rivers support a good stock of trout. Migratory salmon and sea trout come up to spawn in late summer and the area has an abundance of animal and bird-life. 

Near the confluence with the River Tawe


Henrhyd Falls and the Nant Llech valley are particularly spectacular in cold winters when extensive icing occurs. The picture on the right was taken in the severe winter of 1982/83

Several published walks include the valley of Nant Llech and Henrhyd Falls.  These and other local walks supplemented by detailed maps, are available on the "Walks-in-Wales" web-site.

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Craig-y-Nos Castle

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